/*
 * Licensed to the Apache Software Foundation (ASF) under one
 * or more contributor license agreements.  See the NOTICE file
 * distributed with this work for additional information
 * regarding copyright ownership.  The ASF licenses this file
 * to you under the Apache License, Version 2.0 (the
 * "License"); you may not use this file except in compliance
 * with the License.  You may obtain a copy of the License at
 * 
 *   http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing,
 * software distributed under the License is distributed on an
 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
 * KIND, either express or implied.  See the License for the
 * specific language governing permissions and limitations
 * under the License.
 */

//
// Contains ReflectingTestFetcher, which just echoes its input. Meant for use in
// unit tests.

#ifndef NET_INSTAWEB_HTTP_PUBLIC_REFLECTING_TEST_FETCHER_H_
#define NET_INSTAWEB_HTTP_PUBLIC_REFLECTING_TEST_FETCHER_H_

#include "net/instaweb/http/public/async_fetch.h"
#include "net/instaweb/http/public/url_async_fetcher.h"
#include "pagespeed/kernel/base/basictypes.h"
#include "pagespeed/kernel/base/string.h"
#include "pagespeed/kernel/http/http_names.h"
#include "pagespeed/kernel/http/request_headers.h"
#include "pagespeed/kernel/http/response_headers.h"

namespace net_instaweb {

class MessageHandler;

// A fetcher that reflects headers it gets back into response headers,
// and the URL inside body. We use it to test that we are setting proper
// headers when we are generating requests ourselves.
class ReflectingTestFetcher : public UrlAsyncFetcher {
 public:
  ReflectingTestFetcher() {}
  ~ReflectingTestFetcher() override {}

  void Fetch(const GoogleString& url, MessageHandler* message_handler,
             AsyncFetch* fetch) override {
    RequestHeaders* in = fetch->request_headers();
    ResponseHeaders* out = fetch->response_headers();
    out->SetStatusAndReason(HttpStatus::kOK);
    for (int i = 0; i < in->NumAttributes(); ++i) {
      out->Add(in->Name(i), in->Value(i));
    }
    fetch->Write(url, message_handler);
    fetch->Done(true);
  }

 private:
  DISALLOW_COPY_AND_ASSIGN(ReflectingTestFetcher);
};

}  // namespace net_instaweb

#endif  // NET_INSTAWEB_HTTP_PUBLIC_REFLECTING_TEST_FETCHER_H_
